Shimano SM-BB71-41 PressFit Bottom Bracket

Product Description:
The Shimano SM‑BB71‑41 is a high‑quality PressFit bottom bracket designed for MTB and road frames using a 41 mm PressFit shell (BB92 standard). Engineered for Shimano Hollowtech II 24 mm spindle cranksets, it provides smooth rotation, excellent sealing, and long‑term durability.

Built with fiber‑reinforced polymer cups and sealed steel bearings, this bottom bracket reduces frame noise, prevents corrosion, and delivers consistent performance in all riding conditions. These units are OEM, brand new, never installed, and supplied without retail packaging.

Key Features:
• Brand: Shimano
• Model: SM‑BB71‑41
• Bottom bracket type: PressFit (41 mm shell)
• Spindle type: Hollowtech II (24 mm)
• Shell compatibility: BB92 (41 mm ID, 89.5–92 mm width)
• Material: Fiber‑reinforced polymer cups with sealed steel bearings
• Color: Black
• Weight: ~72 g (without spacer)
• Condition: New OEM, never installed
• Includes: Left & right cups, inner cover, O‑rings, 2.5 mm spacer

Fitment Details:
• Fits frames with 41 mm PressFit shells:
MTB BB92 (89.5–92 mm)
Road BB86 (86 mm) (inner sleeve may not fit; reuse or omit as needed)
• Compatible with Shimano Hollowtech II cranksets (24 mm spindle) and MTB, gravel, cyclocross, or road bikes using PF41 shells
• Sealed bearings for low maintenance and long service life
• Polymer cups reduce creaking and protect carbon frames